The cache is placed in the USGS Taylor Monument Quadrangle in California. This is the thirtieth in our series of caches placed near the site for which a USGS 7½-minute quadrangle map is named.
The Taylor Monument Pillar is said to be a mountain pillar along the Sacramento River. After several Google attempts I don’t think it refers to the monument you will find at this location. We’d appreciate it if anyone with more information would give us a link to that information so we can improve the information on this page.
The Quadrangle boundaries are:
N 38º 37’ 30” and N 38º 45’ 00”
W 121º 30’ 00” and W 121º 37’ 30”.
The United States Geological Survey (USGS) has many missions. At one time, a major mission of the USGS was the supplying of topographic maps of the United States on several scales. Our cache series is based on the 7½-minute quadrangle series.
The term quadrangle is used, instead of quadrilateral or rectangle, because the sides of these blocks are curved. The USGS divided the United States into quadrangles that are 7½ minutes by 7½ minutes. Since a degree is divided into 60 minutes, a quadrangle one degree by one degree contains 64 of these quadrangles.